KR100824180B1 - A placementing method of reinforcing strip for supporting reinforced earth wall - Google Patents

Abstract

A construction method of fabric reinforcing strips for supporting a retaining wall made of a reinforced earth is provided to prevent right and left parts of the retaining wall from being twisted by crossing the fabric reinforcing strips and making the rear end of the fabric reinforcing strips a manual support unit. In a construction method of fabric reinforcing strips for supporting a retaining wall made of a reinforced earth(E), the fabric reinforcing strips cross each other in the shape of X on the reinforced earth. The rear end of the fabric reinforcing strip shapes into loop, and rises from the ground, making a manual support unit(M). The rear end of the fabric reinforcing strip is buried under the reinforced earth and has manual support resistance with regard to the reinforced earth.

Description

Construction method of strip-shaped fiber reinforcement for supporting retaining wall of prefabricated reinforcement {A Placementing method of reinforcing strip for supporting reinforced earth wall}

The present invention relates to a method of constructing a strip-shaped fiber reinforcement embedded in a reinforcement soil to support a panel or block or other various retaining wall walls used in the construction of the retaining wall, and more particularly, in a method of supporting the retaining wall using the strip-shaped fiber reinforcement. In the present invention, the stiffeners are continuously connected in a zigzag manner by hooking the band-shaped reinforcement to the annular connection portion or the reinforcement fitting groove of the retaining wall wall and embedded in the reinforcement soil at the rear of the retaining wall wall. Crossed in the form of X on the reinforcement soil, the rear end is embedded in the reinforcement soil in the form of a loop form the ground so that the rear end of the reinforcement has a passive bearing resistance against the reinforcement soil.

The reinforcement used for the retaining wall construction includes a mesh reinforcement such as a geogrid or tensargrid, and its use is limited to a block retaining wall.

In addition, the metal strip reinforcing material is galvanized to prevent corrosion on the surface of the strip-shaped steel plate having a certain width and length. The reliability of the tensile force is high, but it is expensive and is a metallic material. This is inconvenient, the connection method and the connection form with the reinforced earth retaining wall wall is not diverse, there is a problem that the workability is deteriorated because it had to bind to the connection portion with pins or bolts.

Recently, the band-shaped fiber reinforcement that is widely used is formed by coating multiple strands of polyester resin fibers with polyethylene resin, and a long band of about 100 to 150 m is wound in a rolled state. It is constructed so that the front wall can be firmly supported by friction support with the reinforced soil by releasing it and connecting it to the connection part of the reinforced soil retaining wall wall and burying the rear end in the reinforced soil.

On the other hand, the present applicant is a band-shaped fiber reinforcement in order to solve the inconvenience of several people to wrap and pull the reinforcement by hand in order to relieve the looseness of the folded portion at the connecting portion of the retaining wall wall when the above-described band-shaped fiber reinforcement 302139 was obtained for the reinforcement construction method and the reinforcement pulling mechanism which cut the length into unit length and connect it to the connection part of the retaining wall wall individually and pull it using the reinforcement pulling mechanism. A method of supporting a retaining wall by using a reinforcement to connect a plurality of connectors protruding to an inner surface of the retaining wall with pins to continuously connect them in a zigzag fashion and to support the retaining wall by stiffening the reinforcement backfill on the reinforcement at the rear of the retaining wall. The band reinforcement on both sides of adjacent connectors does not stretch In the state fixed by two bite mechanisms respectively, pull the two sides with a uniform tension by using a pull mechanism at the rear end of the middle part of the strip-shaped reinforcement, which is fixed on both sides, and fix it with temporary fixing pins, and disassemble one of the two bite mechanisms. After fixing the reinforcement to the next connector side where the pulling operation is required, the reinforcing member is moved, and the following reinforcing member pulling is repeated to prevent the occurrence of loosening at the portion where the reinforcing member is folded by the biting mechanism. The pulling mechanism of the reinforcement can be pulled quickly and uniformly evenly by the pulling mechanism alone, and the method of constructing the reinforcement with the anchor of the anchor type on the rear end of the reinforcement for improving the bearing capacity of the retaining wall and its construction A bite and pull mechanism suitable for the

In addition, the applicant's patent No. 328621 drills a circular hole at regular intervals along the longitudinal direction in the center of the strip-shaped fiber reinforcement, and the upper and lower surfaces have upward and downward resistance projections in the direction of the width direction at regular intervals along the longitudinal direction. Are formed to cross each other, and both sides are spaced apart from each other at the effective distance so that they do not overlap each other at the effective distance in supporting the retaining wall wall using a reinforcement having side resistance protrusions formed at regular intervals. Disclosed is a method for constructing a reinforcing material in which a reinforcing soil is compacted so that the rear end is fixed to the ground so that the rear end of the reinforcing material has resistance to the reinforcing soil.

In addition, the applicant's patent No. 660356 describes the folding of the middle portion of the strip-shaped fiber reinforcement in a thickness thinner than the other portions along the longitudinal direction, and folding the tip half by half to connect the retaining wall wall or the rear end by half. By standing up in a folded state, it is possible to minimize the subsidiary materials and to improve the bearing capacity, and Patent No. 615472 proposes a strip-shaped fiber reinforcing material to further improve this.

The construction method of Patent No. 328621 is shown in Figs. 1 to 4 among the construction methods of the conventional strip-shaped fiber reinforcement, and Fig. 1 and Fig. 2 show a case where the panel retaining wall is applied. In the case of a block retaining wall, an annular connection part C or a reinforcement fitting groove D is formed at a rear portion of the panel P or block B, which usually forms the retaining wall wall. ) Or the end of the strip-shaped fiber reinforcement (1) in a continuous state in the stiffener fitting groove (D) and is connected in a zigzag fashion continuously and embedded in the reinforcement soil (E) at the rear of the retaining wall wall, the band-shaped fiber reinforcement (1) Arrange the adjacent ones to be spaced apart from each other so as not to overlap each other up and down, and the rear end of the strip-shaped fiber reinforcement (1) is resistant to the reinforcement soil (E) by stiffening the reinforcement body in a state where the rear end is erected with respect to the ground. Construction to have It is.

On the other hand, in the construction method of the strip-shaped fiber reinforcement according to the prior art shown in Figures 1 to 4 in order to secure the connection width of the reinforcement to the maximum size in order to prevent the front and rear distortion of the retaining wall wall left and right side panel (P) or Ring-shaped connecting portion (C) or reinforcing material fitting groove (D) is formed on both sides of the rear side of the block (B), so that when the continuous strip-shaped fiber reinforcing material (1) is connected in a zigzag pattern, adjacent panels (P) or blocks The spacing between the reinforcing material (B) is relatively narrow, and this causes a problem that the passive support (M) curvature radius of the rear end of the strip-shaped fiber reinforcement (1) becomes small, thereby not exhibiting sufficient manual bearing resistance.

The present invention has been made to solve the above-mentioned conventional problems, the object of the present invention is to maximize the connection width of the reinforcement to the retaining wall wall at the same time to prevent the warp in the front and rear direction of the retaining wall wall left and right at the same time The present invention provides a method of constructing a strip-shaped fiber reinforcement that can maximize passive bearing resistance.

In order to achieve the above object, the present invention uses a band-shaped fiber reinforcement, but hangs the band-shaped reinforcement in the annular connection portion or the reinforcement fitting groove of the retaining wall wall, and connects it continuously in a zigzag manner and embeds the reinforcement body at the rear of the retaining wall wall to support the retaining wall. In the method, the zig-zag continuous continuous strip-shaped fiber reinforcement crosses the left and right adjacent to each other in the form of X on the reinforcement soil, the rear end is embedded in the reinforcement soil in the form of a loop form the ground reinforcement Provided is a method of constructing a reinforcement for prefabricated retaining wall retaining wall having a rear end of the bearing having a passive bearing resistance against the reinforced soil.

In the present invention, the retaining wall wall may be made of any one of a retaining wall member including a concrete panel, a block, a steel grid, and a steel front plate.

The present invention crosses the zigzag continuous strip-shaped fiber reinforcement adjacent to the left and right adjacent to each other in the X-shape on the reinforcement soil, and the rear end is erected on the ground to form a loop form the front and rear of the retaining wall wall left and right sides In order to prevent warping in the direction, it is useful to maximize the connection width of the reinforcement to the retaining wall wall and at the same time the passive supporting resistance of the rear end of the reinforcement.

Hereinafter, with reference to the accompanying drawings, preferred embodiments that do not limit the present invention will be described in detail.

Reference numerals used in the drawings will be described using the same reference numerals for the same components as the prior art shown in FIGS. 1 to 4 for convenience.

5 and 6 illustrate a method of constructing a strip-shaped fiber reinforcing material according to an embodiment of the present invention. In the present embodiment, when the concrete panel P forms the retaining wall wall, the concrete panel P is disposed up and down. Continuously interlocking from side to side to form a retaining wall surface, the concrete panel is typically constructed by crossing the left and right adjacent panels by about half the height as shown in FIG.

The rear surface of the concrete panel (P) is formed so that the ring-shaped connecting portion (C) is biased to both sides, the conventional strip-shaped fiber reinforcement (1) or the applicant's patent No. 660356 or The foldable strip-shaped fiber reinforcement of Patent No. 615472 is inserted in a zigzag continuous connection and embedded in the reinforcement soil (E) at the rear of the retaining wall wall, but the zigzag-connected strip-shaped fiber reinforcement (1) is adjacent to the left and right adjacent reinforcement soils. (E) above the X-shaped cross, and the passive support (M) at the rear end of the band-shaped fiber reinforcement (1) is embedded in the reinforcement soil (E) in the state of standing up to the ground while forming a loop (loop) band-shaped fiber reinforcement The rear end of (1) is capable of exerting passive bearing resistance against the reinforced earth (E).

In the present embodiment, the end portion of the strip-shaped fiber reinforcement (1), that is, the portion inserted into the connection portion (C) of the panel (P) forming the retaining wall wall, so that the shape of the separate shape so as to maintain a stable state bent in a generally right angle (Not shown), and the manual support (M), which is the rear end of the strip-shaped fiber reinforcement (1) also forms a loop shape so that it can be stably held in the form of a separate shape or other temporary fixing nail to maintain the standing state on the ground. It is preferable to drive the back of the manual support (M) on both sides.

In this embodiment, the radius of curvature of the passive support (M) is usually increased in proportion to the longer the rear length of the strip-shaped fiber reinforcement (1), even if the rear length of the strip-shaped fiber reinforcement (1) is adjacent to the left and right The radius of curvature can be varied as needed within the range where the interference between the passive supporting parts (M) does not occur. Therefore, there is a rock or underground burial at the rear of the retaining wall so that the reinforcement can exhibit sufficient bearing capacity even in a site with a short backfill length. There is an advantage that can be constructed so that.

In the present embodiment, a specific type of panel is illustrated and described, but the present invention is not limited thereto.

7 and 8 illustrate another embodiment of the present invention. In the present embodiment, when the concrete block B forms the retaining wall wall, the concrete block B is continuously constructed vertically in the vertical wall and the retaining wall. It is to form a surface, the construction form of the concrete block is of any type of straight construction or cross construction is irrelevant, of course, can be applied to the construction method of the compromise between the straight construction and cross construction.

In the present embodiment, the upper surface of the concrete block (P) is formed with a reinforcement fitting groove (D) opened to the rear, the existing strip-shaped fiber reinforcement or the applicant's patent No. 660356 or Folded strip-shaped fiber reinforcement (1) of Patent No. 615472 is folded in half width as shown in the drawing and connected continuously in a zigzag manner to be embedded in the reinforcement soil (E) at the rear of the retaining wall wall, but continuously connected in the zigzag manner. The reinforcing material 1 crosses the left and right adjacent to each other in an X shape on the reinforcing soil E, and the passive support portion M at the rear end of the strip-shaped fiber reinforcing material 1 is erected with respect to the ground while forming a loop shape. It is embedded in the reinforcement soil (E) in the state so that the rear end of the strip-shaped fiber reinforcement (1) can exert a passive bearing resistance against the reinforcement soil (E).

In the present embodiment, the front end portion of the strip-shaped fiber reinforcement (1), that is, the portion inserted into the reinforcement fitting groove (D) of the concrete block (B) forming the retaining wall wall is folded in half width even without installing a separate shape retention zone In general, the bent state is maintained in a stable state, and lying on the reinforcement soil (E) in a naturally unfolded state.

On the other hand, the manual support portion (M), which is the rear end of the strip-shaped fiber reinforcement (1) is formed in a loop form to maintain a standing state with respect to the ground (reinforced soil) in a separate shape maintenance or other temporary fixing nail, etc. It is preferable to drive both sides of the starting portion of the manual support (M).

In this embodiment, the radius of curvature of the passive support (M) is usually increased in proportion to the longer the rear length of the strip-shaped fiber reinforcement (1), even if the rear length of the strip-shaped fiber reinforcement (1) is adjacent to the left and right The radius of curvature can be varied as needed within the range where the interference between the passive supporting parts (M) does not occur. Therefore, there is a rock or underground burial at the rear of the retaining wall so that the reinforcement can exhibit sufficient bearing capacity even in a site with a short backfill length. There is an advantage that can be constructed so that.

Although a specific type of block has been illustrated and described in the present embodiment, the present invention is not limited thereto.

9 and 10 illustrate another embodiment of the present invention. In this embodiment, the steel lattice frame F forms a retaining wall wall, and the steel lattice frame F is shown in FIGS. 4 and 5. As shown in the panel (P) as shown in the vertically and vertically and continuously building the retaining wall surface is formed, the steel grid (F) is generally half of the grid frame adjacent to the left and right as shown in FIG. It is constructed while crossing by height.

Steel lattice applied to the present embodiment is described in detail in the applicant's patent No. 603141, which is a horizontal flat steel 14 is assembled to the vertical member 12, the horizontal flat steel 14 Is assembled so as to be inclined upward toward the front of the vertical member 12 to prevent the soil from being lost to the outside, by the angle of attachment of the horizontal flat steel (14) even if a separate nonwoven fabric or vegetation mat is not installed behind the grid Soil can be prevented from spilling, and an economical and safe environment-friendly vegetation can be provided.

 In the present embodiment, the back of the steel grid (F) is formed so that the ring-shaped connecting portion (C) is biased to both sides, the connection portion (C) of the usual strip-shaped fiber reinforcement (1) or the applicant Zigzag continuous connection is made by inserting the folding belt-type fiber reinforcement of Patent No. 660356 or No. 615472 and embedded in the reinforcement soil (E) at the rear of the retaining wall wall. Doing cross each other in an X shape on the reinforcement soil (E), the passive support (M) at the rear end of the band-shaped fiber reinforcement (1) forms a loop (loop) to the reinforcement soil (E) in the state standing on the ground It is buried so that the rear end of the strip-shaped fiber reinforcement 1 can exert a passive bearing resistance against the reinforcement soil E.

Also in this embodiment, the front end portion of the strip-shaped fiber reinforcement (1), that is, the portion inserted into the connecting portion (C) of the steel grid frame (F) forming the retaining wall wall in a separate form so as to maintain a stable state bent in a generally right angle form The holder (not shown) can be inserted, and a separate support or other temporary shape for maintaining a standing state with respect to the ground while forming a loop shape is also a manual support (M), which is the rear end of the strip-shaped fiber reinforcement (1). It is preferable to drive the fixing nail to both sides of the starting portion of the manual support (M).

In this embodiment, the radius of curvature of the passive support (M) is usually increased in proportion to the longer the rear length of the strip-shaped fiber reinforcement (1), even if the rear length of the strip-shaped fiber reinforcement (1) is adjacent to the left and right The radius of curvature can be varied as necessary within the range where the interference between the passive supporting parts (M) does not occur. Therefore, there is a rock or underground burial at the rear of the retaining wall wall so that the reinforcement can exhibit sufficient bearing capacity even in a site with a short backfill length. There is an advantage that can be constructed so that.

In the present embodiment, a specific type of steel grating is illustrated and described, but the present invention is not limited thereto.

11 and 12 illustrate another embodiment of the present invention. In this embodiment, the steel front plate G forms a retaining wall wall, and the steel front plate G is illustrated in FIGS. 4 and 5. In the same manner as the panel P as shown in FIGS. 9 and 10, the retaining wall surface is formed while being continuously constructed up and down, and the steel front plate G is generally adjacent to the left and right as shown in FIG. 11. The grids are constructed by crossing half the height.

Steel front plate (G) applied to the present embodiment is described in detail in the applicant's patent No. 89638, which is roughly described in front of the front surface 13 and the front surface 13 to be exposed to the upper body 13, It extends to both left and right sides is made of a side surface 15 which is adjacent to the adjacent front plate 10.

 In the present embodiment, the rear surface of the steel front plate (G) has a ring-shaped connecting portion (C) is formed on both sides, the connection portion (C) in the usual strip-shaped fiber reinforcement (1) or the applicant's patent No. 660356 Zigzag-type continuous foldable belt-shaped fiber reinforcement of No. 615472 is embedded in the reinforcement soil (E) at the rear of the retaining wall wall, and the zigzag-connected band-like fiber reinforcement (1) is adjacent to each other. Cross the reinforcement soil (E) in the X-shape, and the passive support (M) at the rear end of the band-shaped fiber reinforcement (1) is buried in the reinforcement soil (E) in the form of a loop (loop) standing on the ground The rear end of the strip-shaped fiber reinforcement (1) is capable of exerting a passive bearing resistance against the reinforcement soil (E).

In the present embodiment, the end portion of the strip-shaped fiber reinforcement (1), that is, the portion inserted into the connection portion (C) of the steel front plate (G) forming the retaining wall wall is a separate form so as to maintain a stable state bent in a generally perpendicular form The holder (not shown) can be inserted, and a separate support or other temporary shape for maintaining a standing state with respect to the ground while forming a loop shape is also a manual support (M), which is the rear end of the strip-shaped fiber reinforcement (1). It is preferable to drive the fixing nail to both sides of the starting portion of the manual support (M).

In this embodiment, the radius of curvature of the passive support (M) is usually increased in proportion to the longer the rear length of the strip-shaped fiber reinforcement (1), even if the rear length of the strip-shaped fiber reinforcement (1) is adjacent to the left and right The radius of curvature can be varied as needed within the range where the interference between the passive supporting parts (M) does not occur. Therefore, there is a rock or underground burial at the rear of the retaining wall so that the reinforcement can exhibit sufficient bearing capacity even in a site with a short backfill length. There is an advantage that can be constructed so that.

In the present embodiment, but shown and described with respect to a specific type of steel front plate, the present invention is not limited thereto.

In the above embodiments of the present invention, in the case of the panel, the lattice frame, and the front plate, except for the block, the hook-shaped connection part is formed at the rear of the retaining wall wall, and each fiber reinforcement construction method of the present invention is applied. As can be seen from the plan view of the example, since the strip-shaped fiber reinforcement is pulled diagonally from the rear part of the retaining wall wall, it is possible to minimize the bending of the connection inward, thereby supporting the retaining wall wall more firmly. Of course, deformation of the retaining wall wall, that is, warping, can be effectively prevented.

1 is a perspective view showing a construction method of the strip-shaped fiber reinforcement in the conventional panel-shaped retaining wall,

2 is a plan view of FIG.

Figure 3 is a perspective view showing a construction method of the strip-shaped fiber reinforcement in the conventional block-shaped retaining wall,

4 is a plan view of FIG.

Figure 5 is an embodiment of the present invention, a perspective view and an enlarged view showing the construction method of the strip-shaped fiber reinforcement in the panel retaining wall,

6 is a plan view of FIG. 5;

Figure 7 shows another embodiment of the present invention, a perspective view showing a construction method of the strip-shaped fiber reinforcement in the block retaining wall,

8 is a plan view of FIG.

Figure 9 shows another embodiment of the present invention, a perspective view showing the construction method of the strip-shaped fiber reinforcement in the retaining wall using a steel grid,

10 is a plan view of FIG. 9;

Figure 11 shows another embodiment of the present invention, a perspective view showing the construction method of the strip-shaped fiber reinforcement in the retaining wall using the steel front plate,

12 is a plan view of FIG. 11.

* Explanation of symbols for main parts of the drawings

1: strip-shaped fiber reinforcement

12: vertical member

13: front

14: horizontal flat steel

15: side

B: block

C: Connection

D: Stiffener Fitting Groove

E: reinforced earth

F: steel grating

G: steel front plate

M: Manual Support

P: Panel

Claims (2)

Support the retaining wall using a band-shaped fiber reinforcement, but connect the band-shaped fiber reinforcement to the annular connection or reinforcement fitting groove of the retaining wall wall in a zigzag fashion and bury the band-shaped fiber reinforcement in the rear wall of the retaining wall to support the retaining wall. In the reinforcement construction method to; The zigzag continuous fiber-like reinforcing material (1) is connected to the left and right adjacent to cross the X-shape on the reinforcement soil (E), the rear end of the band-like fiber reinforcement (1) forms a loop (ground) Reinforced soil retaining wall, characterized in that the rear end of the strip-shaped fiber reinforcement (1) has a passive supporting resistance to the reinforcement soil (E) in the state of standing up to form a passive support (M). Construction method of supporting reinforcement. The method according to claim 1, The retaining wall wall is reinforcement construction method for prefabricated retaining soil retaining wall support, characterized in that any one of the retaining wall member including a concrete panel, a block, steel grid, steel front plate.

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